Biology 9700 · AS & A Level · Factors that affect enzyme action

Factors that affect enzyme action — practice question

Following a heart attack, the enzyme lactate dehydrogenase passes into the blood plasma from injured heart muscle. What is needed to measure the activity of lactate dehydrogenase activity in a sample of blood plasma?

  • Asterilisation by heating: required; incubation with substrate: required; incubation with inhibitor: required
  • Bsterilisation by heating: not required; incubation with substrate: required; incubation with inhibitor: required
  • Csterilisation by heating: not required; incubation with substrate: required; incubation with inhibitor: not required
  • Dsterilisation by heating: not required; incubation with substrate: not required; incubation with inhibitor: required

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